JP2004231594A

JP2004231594A - Composition of germicidal detergent

Info

Publication number: JP2004231594A
Application number: JP2003024022A
Authority: JP
Inventors: Noboru Matsuo; 登松尾; Kiyoaki Yoshikawa; 清章吉川
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2003-01-31
Filing date: 2003-01-31
Publication date: 2004-08-19
Anticipated expiration: 2023-01-31
Also published as: JP4578776B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composition of germicidal detergent having excellent germicidal activities and detergent activities, and hardly causing a whitening phenomenon of a treating object. <P>SOLUTION: The composition of germicidal detergent contains (A) one or more kinds of germicides selected from a quaternary ammonium salt-based germicide, a pyridinium salt-based germicide, a biguanide-based germicide and an amino acid-based germicide, (B) an alkali metal salt of silicic acid, and (C) a specific polyoxyalkylene alkyl ether having 16-600 average molar number of added alkylene oxide. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、殺菌洗浄剤組成物に関する。
【０００２】
【従来の技術】
学校、病院、宿泊施設、食堂等の各種施設や、食品加工工場等の各種工場等では、陶器製のタイル、金属製の壁、床など、洗浄、殺菌すべき様々な硬質表面が存在する。また、食品加工工場などでは、一連の加工処理を自動化して行うため、加工機械の洗浄、殺菌は極めて重要である。
【０００３】
これらの硬質表面に付着した頑固な油汚れや米飯汚れ等に対する洗浄性能を向上させるためにアルカリ剤を用いることが広く知られているが、中でも珪酸アルカリ金属塩やアルカリ金属水酸化物が最も一般的に用いられている。特に珪酸アルカリ金属塩は、含有量が高くてもアルカリ金属水酸化物ほどの強アルカリにならず、逆に酸性汚れに対してｐＨ値を保持させる作用、すなわちｐＨ緩衝作用を有していることから、最も好適に使用されている。例えば、特許文献１には、頑固な油汚れに対して洗浄と殺菌を同時に行うことができる殺菌洗浄剤として、第四級アンモニウム塩と、非イオン界面活性剤と、珪酸塩と、グリコール系溶剤とを含むアルカリ性殺菌洗浄剤が開示されている。
【０００４】
また、上記の硬質表面対象物の洗浄、殺菌には、洗浄剤を発泡させて泡状にして適用することが行われる。泡状での洗浄は、洗浄剤の散布状況が目視にて確認できるので、処理箇所が容易に判別でき、また洗浄剤の不必要な飛散を抑制できるという利点がある。また、泡状に塗布することで、洗浄対象における滞留時間が長くなるため、洗浄、殺菌効果が向上する。例えば、特許文献２には、泡安定性能と泡保持性能に優れ、泡洗浄に適した殺菌洗浄剤組成物として、特定の界面張力を有する有機溶剤、界面活性剤、殺菌剤及び水を含有する殺菌洗浄剤組成物が開示されている。
【０００５】
【特許文献１】
特開平６−２６４０９７号公報
【特許文献２】
特開平１０−３３０７９２号公報
【０００６】
【発明が解決しようとする課題】
このように殺菌性能と洗浄性能を併せ持つ殺菌洗浄剤が種々提案されているが、第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤、ビグアナイド系殺菌剤及びアミノ酸系殺菌剤から選ばれる１種以上の殺菌剤を使用した場合に珪酸塩、特に珪酸アルカリ金属塩を併用すると、析出物が発生し処理対象物に残存、付着して、いわゆる白化現象を起こすことがある。白化現象を起こしてしまうと、すすぎ時などにこれを除去するための擦り洗いなどが必要となり、処理面積が大きくなればなるほど負担も増大する。
【０００７】
本発明の課題は、優れた殺菌性能と洗浄性能を併せ持ち、且つ処理対象物の白化現象を起こさない殺菌洗浄剤組成物を提供することである。
【０００８】
【課題を解決するための手段】
本発明は、（Ａ）第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤、ビグアナイド系殺菌剤及びアミノ酸系殺菌剤から選ばれる１種以上の殺菌剤〔以下、（Ａ）成分という〕、（Ｂ）珪酸アルカリ金属塩〔以下、（Ｂ）成分という〕、並びに（Ｃ）下記一般式（Ｉ）で表されるポリオキシアルキレンアルキルエーテル〔以下、（Ｃ）成分という〕を含有する殺菌洗浄剤組成物に関する。
Ｒ^１−Ｏ−（ＡＯ）_ｎ−Ｈ（Ｉ）
〔式中、Ｒ^１は炭素数８〜３０の直鎖又は分岐鎖のアルキル基又はアルケニル基を示し、ＡＯは炭素数２〜４のアルキレンオキシ基であり、ｎはアルキレンオキサイドの平均付加モル数であり１６〜６００の数である。〕。
【０００９】
また、本発明は、上記本発明の殺菌洗浄剤組成物を１０〜１０００ｍＬ／水１Ｌの濃度に希釈した水希釈液を発泡させて洗浄対象物に接触させる洗浄方法に関する。
【００１０】
【発明の実施の形態】
（Ａ）成分は、主として殺菌効果に寄与するものである。（Ａ）成分のうち、第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤としては、ジアルキル（アルキル基は、好ましくは炭素数８〜１４）ジメチルアンモニウムハライド、塩化ベンザルコニウム、塩化ベンゼトニウム及びこれらの対イオンが他のアニオンに置換された化合物等が挙げられる。第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤は、下記一般式（Ａ−１）で表される化合物及び下記一般式（Ａ−２）で表される化合物から選ばれるものが好ましい。
【００１１】
【化３】

【００１２】
〔式中、Ｒ^２、Ｒ^３、Ｒ^４、Ｒ^５は、これらの１つ又は２つが、炭素数８〜１６の直鎖もしくは分岐鎖のアルキル基もしくはアルケニル基又は次式
【００１３】
【化４】

【００１４】
で表される基を示し、残りは同一でも異なっていても良く、それぞれ炭素数１〜３のアルキル基、ベンジル基又は次式−（ＣＨ_２ＣＨ_２Ｏ）_ｍ−Ｈ（ｍはエチレンオキサイドの平均付加モル数であり２〜２０の数である。）で表される基を示し、Ｒ^６は炭素数１２〜１８の直鎖又は分岐鎖のアルキル基又はアルケニル基を示し、Ｘ⁻は塩素イオン等のハロゲンイオン又はモノアルキルリン酸イオン、グルコン酸イオン等の有機アニオンである。〕。
【００１５】
また、ビグアナイド系殺菌剤としては、クロルヘキシジン、グルコン酸クロルヘキシジン、ポリヘキサメチレンビグアニジン等が挙げられる。
【００１６】
また、アミノ酸系殺菌剤としては、アルキル（好ましくは炭素数１２〜１８）ジアミノエチルグリシン、ジ（アルキル（好ましくは炭素数６〜１２）アミノエチル）グリシン等のアルキルポリアミノエチルグリシン等が挙げられる。（Ａ）成分としては、第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤及びビグアナイド系殺菌剤から選ばれる一種以上が好ましく、特に第四級アンモニウム塩系殺菌剤及び／又はピリジニウム塩系殺菌剤が好ましい。
【００１７】
第四級アンモニウム塩系殺菌剤、ピリジニウム塩系殺菌剤としては、塩化ベンザルコニウム（例えば、商品名サニゾールＣ、花王（株）製等）、ジアルキルジメチルアンモニウムクロライド（例えば、商品名コータミンＤ１０Ｅ、花王（株）製等）が特に好ましい。また、ビグアナイド系殺菌剤としては、ポリヘキサメチレンビグアニジン塩酸塩が特に好ましい。
【００１８】
（Ｂ）成分は、主として洗浄効果に寄与するものである。（Ｂ）成分としては、メタ珪酸ナトリウム、オルト珪酸ナトリウム、１号珪酸ナトリウム、２号珪酸ナトリウム、３号珪酸ナトリウム、４号珪酸ナトリウム、オルト珪酸カリウム、１Ｋ珪酸カリウム、２Ｋ珪酸カリウム等が挙げられ、中でもメタ珪酸ナトリウム、１号珪酸ナトリウム、２号珪酸ナトリウム、３号珪酸ナトリウム、４号珪酸ナトリウム、オルト珪酸カリウム、１Ｋ珪酸カリウム、２Ｋ珪酸カリウムが好ましく、特に、メタ珪酸ナトリウム、オルト珪酸カリウム、１Ｋ珪酸カリウム、２Ｋ珪酸カリウムが好ましい。
【００１９】
（Ｃ）成分は、主として白化防止効果に寄与するものである。（Ｃ）成分の一般式（Ｉ）において、Ｒ^１の炭素数は１４〜２２が好ましい。ＡＯは炭素数２〜４のアルキレンオキシ基であり、全ＡＯ中、モル比率でエチレンオキシ基（ＥＯ）が８０％以上が好ましく、ＥＯが９０％以上がより好ましく、ＥＯが１００％が最も好ましい。また、ｎはアルキレンオキサイドの平均付加モル数であり、１６〜６００の数であるが、２０〜２００、更に３０〜１００が好ましい。ｎがこの範囲にあると処理対象物の白化防止性に優れる。
【００２０】
（Ａ）成分の殺菌効果と（Ｂ）成分の洗浄効果と更に（Ｃ）成分の白化防止効果を同時に満足することによって、優れた殺菌性能と洗浄性能を併せ持ち、且つ処理対象物の白化現象を起こさない殺菌洗浄剤組成物が提供される。
【００２１】
本発明の殺菌洗浄剤組成物は、更に、（Ｄ）両性界面活性剤〔以下、（Ｄ）成分という〕を含有することができる。（Ｄ）成分としては、アルキル（好ましくは炭素数６〜２２、特に好ましくは炭素数１２）ジメチルアミンオキサイド等のアミンオキサイド、アルキル（好ましくは炭素数６〜２２、特に好ましくは炭素数１２）ジメチルアミノ酢酸ベタイン等のアルキルジメチルアミノ脂肪酸ベタイン、ラウロイルアミドプロピルベタイン等のアルキル（好ましくは炭素数６〜２２）アミドベタイン、ラウリルヒドロキシスルホベタイン等のアルキル（好ましくは炭素数６〜２２）スルホベタイン、ココアミドジメチルヒドロキシプロピルスルホベタイン等のアルキル（好ましくは炭素数６〜２２）アミドスルホベタイン、２−アルキル−Ｎ−カルボキシメチル−Ｎ−ヒドロキシエチルイミダゾリニウムベタイン等のイミダゾリン型両性界面活性剤が挙げられ、中でもアミンオキサイド、アルキルジメチルアミノ脂肪酸ベタインが好ましい。（Ｄ）成分を含有することにより、製剤安定性や泡立ちが良くなる。
【００２２】
本発明の殺菌洗浄剤組成物は、更に、（Ｅ）金属キレート剤〔以下、（Ｅ）成分という〕を含有することができる。（Ｅ）成分としては、ヒドロキシカルボン酸塩、アミノカルボン酸塩等が挙げられ、特にエチレンジアミンテトラ酢酸塩、ヒドロキシエチルエチレンジアミントリ酢酸塩、ニトリロトリ酢酸塩、クエン酸塩が好ましい。（Ｅ）成分は、希釈時の安定化に効果的であり、また硬度成分による白濁防止や発泡機内での珪酸スケール（珪酸カルシウム）の沈着防止の点でより好ましい。
【００２３】
その他、本発明の殺菌洗浄剤組成物に配合できる成分として、以下のものが挙げられる。
【００２４】
（ｆ）水溶性溶剤
具体的には、エタノール等の炭素数１〜５の１価アルコール、プロピレングリコール等の炭素数２〜１２の２価アルコール、ジエチレングリコールモノエチルエーテル等の（Ｃ）成分以外のポリアルキレングリコールアルキルエーテル等が挙げられる。
【００２５】
（ｇ）アルカリ剤
アルカリ剤は、（Ｂ）成分以外のものであり、具体的には、アルカリ金属の水酸化物、炭酸塩、モノエタノールアミン等のアルカノールアミン等が挙げられる。
【００２６】
（ｈ）防錆剤
具体的には、亜硝酸塩、安息香酸塩、ベンゾトリアゾール、ベンゾチアゾール等が挙げられる。
【００２７】
本発明の殺菌洗浄剤組成物は、（Ａ）成分を０．１〜２０重量％、更に１〜２０重量％含有することが好ましい。また、（Ｂ）成分を０．１〜２０重量％、更に１〜２０重量％含有することが好ましい。また、（Ｃ）成分を０．１〜３０重量％、更に１〜２０重量％含有することが好ましい。また、また、（Ｄ）成分を０．１〜２０重量％、更に１〜１０重量％含有することが好ましい。また、（Ｅ）成分を０．１〜１０重量％、更に１〜１０重量％含有することが好ましい。
【００２８】
また、本発明の殺菌洗浄剤組成物では、（Ｂ）成分と（Ｃ）成分の重量比は、（Ｂ）／（Ｃ）＝１／０．５〜１／１０、更に１／１〜１／５が好ましい。（Ｄ）成分を用いる場合、（Ｄ）成分と（Ｃ）成分の重量比は、（Ｃ）／（Ｄ）＝１／０．２〜１／５、更に１／０．５〜１／２が好ましい。
【００２９】
また、本発明の殺菌洗浄剤組成物は、原液ないし１００倍程度に希釈して使用されるが、使用時の各成分の濃度は、（Ａ）成分が１０ｐｐｍ〜２０重量％、更に１００ｐｐｍ〜２０重量％、（Ｂ）成分が１０ｐｐｍ〜２０重量％、更に１００ｐｐｍ〜２０重量％、（Ｃ）成分が１０ｐｐｍ〜３０重量％、更に１００ｐｐｍ〜２０重量％、（Ｄ）成分が１０ｐｐｍ〜２０重量％、更に１００ｐｐｍ〜１０重量％、（Ｅ）成分が１０ｐｐｍ〜１０重量％、更に１００ｐｐｍ〜１０重量％が好ましい。
【００３０】
本発明の殺菌洗浄剤組成物は、殺菌洗浄性能に優れ、且つ処理対象物の白化現象を起こさないため、幅広い分野での殺菌洗浄に有用である。例えば、病院、養護施設、食品加工工場、クリーニング施設、厨房等の壁、床、窓等あるいはそれらで用いられる器具及び備品の殺菌に用いられる。
【００３１】
本発明の殺菌洗浄剤組成物は、例えば上記のような適当な濃度に希釈して用いられるが、特に、１０〜１０００ｍＬ／水１Ｌの濃度に希釈した水希釈液を発泡させて洗浄対象物に接触させる洗浄方法に用いるのが好ましい。食品加工工場内の製造ライン等、処理面積が大きい場合は、泡洗浄機（例えば「ＳＣＵ−ＨＦ」スプレーイング社製）が好適に用いられ、まな板等の調理器具や備品等、処理面積が小さい場合は、トリガースプレーヤーやフォーマースプレーヤー等の泡を発生させることのできるハンドスプレーヤーが好適に用いられる。
【００３２】
泡洗浄機を用いる場合、発泡倍率〔泡の体積（ｍＬ）／泡の重量（ｇ）の比〕が３〜５０倍、更に５〜４０倍、特に１０〜４０倍であることが好ましい。トリガースプレーヤーやフォーマースプレーヤー等のハンドスプレーヤーを用いる場合、発泡倍率が２〜３０倍、更に２〜２０倍、特に３〜１０倍であることが好ましい。
【００３３】
【発明の効果】
本発明によれば、優れた洗浄性能と殺菌性能とを有し、且つ処理対象物の白化現象を起こさない、特に、加工機械をはじめとする金属製品の殺菌、洗浄に好適に用いられる殺菌洗浄剤組成物が得られる。また、白化残留物の付着が防止されているため、すすぎ工程の負担を軽減でき、経済的に有利である。
【００３４】
【実施例】
実施例１
表１、２に示す液体殺菌洗浄剤組成物を調製し、以下の試験を行った。結果を表１、２に示す。
【００３５】
（１）変性油汚れ洗浄試験
表面を２４０番サンドペーパーで研磨し洗浄、乾燥した鉄板（１５ｃｍ×３０ｃｍ）の表面にナタネ油１．５ｇを均一に塗布し、１８０℃のオーブン中で１時間熱処理を行い、変性油汚れテストピースを作成した。この変性油汚れテストピース上に脱脂綿（１ｃｍ×２ｃｍ）を置き、脱脂綿に表１、２の組成物の１０重量％水溶液１ｇを滴下し、２５℃で１５分間放置した。その後、脱脂綿を除去してすすぎ洗いし、鉄板表面の状態を目視で観察し、以下の基準で評価した。
○：油の層が完全に除去されているか、又は膨潤が認められる。
×：油の層にほとんど変化が認められない。
【００３６】
（２）殺菌性試験
大腸菌（ＥｓｃｈｅｒｉｃｈｉａｃｏｉｌＩＦＯ３９７２）と黄色ブドウ球菌（ＳｔａｐｈｙｌｉｃｏｃｃｕｓａｕｒｅｕｓＩＦＯ１２７３２）を、それぞれＳＣＤ寒天培地（日本製薬（株）製）で３５℃、２４時間前培養した後、形成されたコロニーから菌を一白金耳かきとり、ＳＣＤ寒天培地（日本製薬（株）製）に懸濁して３５℃、２４時間培養した。菌の生育が確認されたら、この懸濁液を遠心洗浄後、適量の滅菌水で約１０^８〜１０^９ｃｅｌｌ／ｍｌの菌濃度に調整して菌液とした。
【００３７】
予め滅菌水を用いて２倍ずつ段階希釈した表１、２の組成物２ｍＬを試験管に用意し、菌液１ｍＬを注ぎ、２５℃で１５分間接触させた。９６穴マイクロシャーレ（コーニングコースター社）に、０．２ｍＬずつ分注した１．０％チオ硫酸ナトリウムを加えたＳＣＤＬＰ培地（日本製薬（株）製）中に細菌と組成物の接触液を直ちに０．０５ｍＬ接種して培養後、組成物を不活性化させ、そのまま３５℃で２４時間培養した。培養後、培養液に濁りが生じない（完全に殺菌できている）最高希釈倍率を最少殺菌濃度として希釈倍率の数値で表した。
【００３８】
（３）白化防止性試験
（３−１）試験法１
ＳＵＳ３０４テストピース（３ｃｍ×８ｃｍ）を２４０番サンドペーパーで研磨し、洗浄、乾燥させる。このテストピースを水平に設置し、表１、２の組成物の２０倍希釈（重量比）水溶液を１ｍＬ均一に滴下し、２５℃で２時間放置後、水流により水洗した。乾燥後、テストピース表面の状態を目視で観察し、白化防止性を以下の基準で評価した。
○：処理（水溶液滴下）前と変化無し。
△：白色物が若干残留している。
×：明らかに白色物が残留しており、白化している。
【００３９】
（３−２）試験法２
上記試験法１と同様に前処理したテストピースを水平に設置し、トリガースプレーヤーを用いて表１、２の組成物の２０倍（重量比）希釈水溶液を均一に噴霧する。ストローク回数は５回とした。このトリガースプレーヤーは１回のストロークで約１ｍＬの水溶液を噴霧でき、水溶液は発泡倍率が３〜１０倍の泡として噴霧される。２５℃で２時間放置後、水流により水洗した。乾燥後、テストピース表面の状態を目視で観察し、上記試験法１と同様に白化防止性を評価した。
【００４０】
【表１】

【００４１】
【表２】

【００４２】
（注）表中、ＰＯＥはポリオキシエチレンの略であり、（）内の数字はエチレンオキサイドの平均付加モル数である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a germicidal detergent composition.
[0002]
[Prior art]
In various facilities such as schools, hospitals, accommodation facilities, canteens, and various factories such as food processing factories, there are various hard surfaces to be cleaned and sterilized, such as ceramic tiles, metal walls and floors. Further, in a food processing factory or the like, since a series of processing is performed in an automated manner, cleaning and sterilization of the processing machine is extremely important.
[0003]
It is widely known to use an alkali agent to improve the cleaning performance against stubborn oil stains and cooked rice stains adhered to these hard surfaces, among which alkali metal silicates and alkali metal hydroxides are the most common. It is used regularly. In particular, the alkali metal silicate does not become as strongly alkaline as the alkali metal hydroxide even when its content is high, and has an effect of maintaining a pH value against acid stains, that is, has a pH buffering effect. And is most preferably used. For example, Patent Document 1 discloses a germicidal detergent capable of simultaneously performing washing and disinfection on stubborn oil stains, as a quaternary ammonium salt, a nonionic surfactant, a silicate, and a glycol-based solvent. An alkaline germicidal detergent comprising:
[0004]
Further, for cleaning and sterilizing the hard surface target, the cleaning agent is foamed and applied. Washing in the form of a foam has the advantages that the spraying state of the cleaning agent can be visually checked, so that the processing location can be easily determined and unnecessary scattering of the cleaning agent can be suppressed. In addition, the application in the form of a foam increases the residence time in the object to be cleaned, thereby improving the cleaning and sterilizing effects. For example, Patent Literature 2 discloses an antibacterial detergent composition that is excellent in foam stabilization performance and foam retention performance and is suitable for foam cleaning, and contains an organic solvent having a specific interfacial tension, a surfactant, a germicide, and water. A germicidal detergent composition is disclosed.
[0005]
[Patent Document 1]
JP-A-6-264097 [Patent Document 2]
JP 10-330792 A
[Problems to be solved by the invention]
As described above, various germicidal detergents having both bactericidal performance and cleaning performance have been proposed, and one kind selected from quaternary ammonium salt bactericides, pyridinium salt bactericides, biguanide bactericides and amino acid bactericides. When a silicate, particularly an alkali metal silicate, is used in combination with the above disinfectant, a precipitate may be generated and may remain and adhere to the object to be treated, causing a so-called whitening phenomenon. When the whitening phenomenon occurs, rubbing or the like for removing the whitening phenomenon is required, and the load increases as the processing area increases.
[0007]
An object of the present invention is to provide a germicidal detergent composition which has both excellent germicidal performance and cleaning performance and does not cause a whitening phenomenon of an object to be treated.
[0008]
[Means for Solving the Problems]
The present invention provides (A) one or more bactericides selected from quaternary ammonium salt bactericides, pyridinium salt bactericides, biguanide bactericides and amino acid bactericides (hereinafter, referred to as component (A)), Disinfection and washing containing (B) an alkali metal silicate [hereinafter, referred to as component (B)] and (C) a polyoxyalkylene alkyl ether [hereinafter, referred to as component (C)] represented by the following general formula (I). Agent composition.
R ¹ -O- (AO) _n -H (I)
[Wherein, R ¹ represents a linear or branched alkyl group or alkenyl group having 8 to 30 carbon atoms, AO represents an alkyleneoxy group having 2 to 4 carbon atoms, and n represents an average number of moles of alkylene oxide added. And a number of 16 to 600. ].
[0009]
In addition, the present invention relates to a cleaning method in which a water diluent obtained by diluting the above sterilizing detergent composition of the present invention to a concentration of 10 to 1000 mL / 1 L of water is foamed and brought into contact with an object to be cleaned.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The component (A) mainly contributes to the bactericidal effect. Among the components (A), quaternary ammonium salt bactericides and pyridinium salt bactericides include dialkyl (alkyl group preferably having 8 to 14 carbon atoms) dimethyl ammonium halide, benzalkonium chloride, benzethonium chloride and Compounds in which these counter ions have been replaced by other anions may be mentioned. The quaternary ammonium salt bactericide and the pyridinium salt bactericide are preferably selected from the compounds represented by the following formula (A-1) and the compounds represented by the following formula (A-2).
[0011]
Embedded image

[0012]
[In the formula, one or two of R ² , R ³ , R ⁴ , and R ⁵ are a straight-chain or branched-chain alkyl group or alkenyl group having 8 to 16 carbon atoms, or a compound represented by the following formula:
Embedded image

[0014]
And the rest may be the same or different, and each represents an alkyl group having 1 to 3 carbon atoms, a benzyl group, or the following formula-(CH ₂ CH ₂ O) _m -H (m is an ethylene oxide R ⁶ represents a linear or branched alkyl or alkenyl group having 12 to 18 carbon atoms, and X ⁻ represents chlorine. It is a halogen ion such as an ion or an organic anion such as a monoalkyl phosphate ion or a gluconate ion. ].
[0015]
Examples of biguanide fungicides include chlorhexidine, chlorhexidine gluconate, polyhexamethylene biguanidine and the like.
[0016]
Examples of the amino acid bactericide include alkyl polyaminoethyl glycine such as alkyl (preferably having 12 to 18 carbon atoms) diaminoethyl glycine and di (alkyl (preferably having 6 to 12 carbon atoms) glycine). As the component (A), one or more selected from quaternary ammonium salt bactericides, pyridinium salt bactericides and biguanide bactericides are preferred, and particularly quaternary ammonium salt bactericides and / or pyridinium salt bactericides. Agents are preferred.
[0017]
Examples of the quaternary ammonium salt fungicide and the pyridinium salt fungicide include benzalkonium chloride (for example, trade name Sanisol C, manufactured by Kao Corporation), dialkyldimethyl ammonium chloride (for example, trade name Cortamine D10E, Kao) And the like are particularly preferred. As the biguanide bactericide, polyhexamethylene biguanidine hydrochloride is particularly preferable.
[0018]
The component (B) mainly contributes to the cleaning effect. Examples of the component (B) include sodium metasilicate, sodium orthosilicate, No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, No. 4 sodium silicate, potassium orthosilicate, 1K potassium silicate, 2K potassium silicate, and the like. Among them, sodium metasilicate, No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, No. 4 sodium silicate, potassium orthosilicate, 1K potassium silicate and 2K potassium silicate are preferable, and particularly, sodium metasilicate, potassium orthosilicate, 1K potassium silicate and 2K potassium silicate are preferred.
[0019]
The component (C) mainly contributes to the whitening prevention effect. In the general formula (I) of the component (C), the carbon number of R ¹ is preferably 14 to 22. AO is an alkyleneoxy group having 2 to 4 carbon atoms, and in the total AO, an ethyleneoxy group (EO) is preferably 80% or more, more preferably 90% or more, and most preferably 100% EO in a molar ratio. . N is the average number of moles of alkylene oxide added and is a number of 16 to 600, preferably 20 to 200, more preferably 30 to 100. When n is in this range, the object to be processed is excellent in whitening prevention.
[0020]
By simultaneously satisfying the sterilizing effect of the component (A), the cleaning effect of the component (B), and the whitening preventing effect of the component (C), it has both excellent sterilizing performance and cleaning performance, and reduces the whitening phenomenon of the object to be treated. A germicidal detergent composition that does not wake up is provided.
[0021]
The germicidal detergent composition of the present invention can further contain (D) an amphoteric surfactant (hereinafter, referred to as (D) component). Examples of the component (D) include amine oxides such as alkyl (preferably having 6 to 22 carbon atoms, particularly preferably having 12 carbon atoms) dimethylamine oxide, and alkyl (preferably having 6 to 22 carbon atoms, particularly preferably having 12 carbon atoms) dimethyl. Alkyl dimethylamino fatty acid betaines such as aminoacetic acid betaine, alkyl (preferably having 6 to 22 carbon atoms) such as lauroylamidopropyl betaine, alkyl (preferably 6 to 22 carbon atoms) such as amidobetaine and laurylhydroxysulfobetaine, coco Alkyl (preferably having 6 to 22 carbon atoms) such as amidodimethylhydroxypropylsulfobetaine and imidazoline-type amphoteric surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine are exemplified. , Among others amine oxide, alkyl dimethyl amino fatty betaines are preferred. By containing the component (D), the preparation stability and foaming are improved.
[0022]
The germicidal detergent composition of the present invention can further contain (E) a metal chelating agent (hereinafter, referred to as (E) component). Examples of the component (E) include hydroxycarboxylates and aminocarboxylates, and particularly preferred are ethylenediaminetetraacetate, hydroxyethylethylenediaminetriacetate, nitrilotriacetate, and citrate. The component (E) is effective for stabilizing at the time of dilution, and is more preferable in terms of prevention of white turbidity due to hardness components and prevention of deposition of silicate scale (calcium silicate) in a foaming machine.
[0023]
In addition, the following can be mentioned as components that can be blended in the germicidal detergent composition of the present invention.
[0024]
(F) Water-soluble solvents Specifically, monohydric alcohols having 1 to 5 carbon atoms such as ethanol, dihydric alcohols having 2 to 12 carbon atoms such as propylene glycol, and components other than the component (C) such as diethylene glycol monoethyl ether And polyalkylene glycol alkyl ethers.
[0025]
(G) Alkali agent The alkali agent is other than the component (B), and specific examples thereof include an alkali metal hydroxide, a carbonate, and an alkanolamine such as monoethanolamine.
[0026]
(H) Rust preventive agents Specific examples include nitrite, benzoate, benzotriazole, benzothiazole and the like.
[0027]
The germicidal detergent composition of the present invention preferably contains the component (A) in an amount of 0.1 to 20% by weight, more preferably 1 to 20% by weight. The component (B) is preferably contained in an amount of 0.1 to 20% by weight, more preferably 1 to 20% by weight. Further, the component (C) is preferably contained in an amount of 0.1 to 30% by weight, more preferably 1 to 20% by weight. Further, the component (D) is preferably contained in an amount of 0.1 to 20% by weight, more preferably 1 to 10% by weight. The component (E) is preferably contained in an amount of 0.1 to 10% by weight, more preferably 1 to 10% by weight.
[0028]
In the germicidal detergent composition of the present invention, the weight ratio of the component (B) to the component (C) is (B) / (C) = 1 / 0.5 to 1/10, and more preferably 1/1 to 1 / 5 is preferred. When the component (D) is used, the weight ratio of the component (D) to the component (C) is (C) / (D) = 1 / 0.2 to 1/5, and more preferably 1 / 0.5 to 1/2. Is preferred.
[0029]
The germicidal detergent composition of the present invention is used after being diluted from an undiluted solution to about 100-fold. The concentration of each component at the time of use is 10 ppm to 20% by weight of the component (A), and more preferably 100 ppm to 20%. 10% to 20% by weight, more preferably 100 ppm to 20% by weight of the component (B), 100 ppm to 20% by weight of the component (C), 100 ppm to 20% by weight, and 10 ppm to 20% by weight of the component (D). The content is more preferably 100 ppm to 10% by weight, and the component (E) is preferably 10 ppm to 10% by weight, more preferably 100 ppm to 10% by weight.
[0030]
The germicidal detergent composition of the present invention is useful for germicidal washing in a wide range of fields because it has excellent sterilizing washing performance and does not cause the whitening phenomenon of the object to be treated. For example, it is used for sterilizing walls, floors, windows, and the like of hospitals, nursing homes, food processing factories, cleaning facilities, kitchens, and the like, or the instruments and equipment used therein.
[0031]
The germicidal detergent composition of the present invention is used, for example, by diluting it to an appropriate concentration as described above. In particular, a water diluent diluted to a concentration of 10 to 1000 mL / 1 L of water is foamed to the object to be cleaned. It is preferably used for a cleaning method of contacting. When the processing area is large, such as a production line in a food processing factory, a foam washing machine (for example, manufactured by “SCU-HF” Spraying Co., Ltd.) is preferably used, and the processing area is small, such as cooking utensils such as cutting boards and fixtures. In this case, a hand player capable of generating bubbles, such as a trigger player or a formal player, is preferably used.
[0032]
When a foam washing machine is used, the foaming ratio [ratio of foam volume (mL) / foam weight (g)] is preferably 3 to 50 times, more preferably 5 to 40 times, and particularly preferably 10 to 40 times. When using a hand sprayer such as a trigger player or a formal player, the foaming ratio is preferably 2 to 30 times, more preferably 2 to 20 times, particularly preferably 3 to 10 times.
[0033]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it has excellent washing performance and sterilization performance, and does not cause a whitening phenomenon of an object to be processed. In particular, sterilization cleaning suitably used for sterilization and cleaning of metal products including processing machines. Agent composition is obtained. Further, since the adhesion of the whitening residue is prevented, the burden of the rinsing step can be reduced, which is economically advantageous.
[0034]
【Example】
Example 1
The liquid sterilizing detergent compositions shown in Tables 1 and 2 were prepared, and the following tests were performed. The results are shown in Tables 1 and 2.
[0035]
(1) Denatured oil stain washing test The surface was polished and washed with # 240 sandpaper, and 1.5 g of rapeseed oil was uniformly applied to the surface of a dried iron plate (15 cm × 30 cm) and heat-treated in a 180 ° C. oven for 1 hour. Was carried out to prepare a denatured oil stain test piece. Absorbent cotton (1 cm × 2 cm) was placed on the denatured oil stain test piece, 1 g of a 10% by weight aqueous solution of the composition of Tables 1 and 2 was dropped on the absorbent cotton, and the mixture was allowed to stand at 25 ° C. for 15 minutes. Thereafter, the absorbent cotton was removed and rinsed, and the state of the iron plate surface was visually observed and evaluated according to the following criteria.
：: The oil layer was completely removed or swelling was observed.
X: Almost no change is observed in the oil layer.
[0036]
(2) Bactericidal test Colonies formed after Escherichia coil IFO3972 and Staphylococcus aureus IFO12732 were precultured on SCD agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.) at 35 ° C. for 24 hours, respectively. A platinum loop was scraped off from the tomato, suspended on an SCD agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.) and cultured at 35 ° C. for 24 hours. After growth of the cells was confirmed, it was used as a cell solution and the suspension was centrifuged washed, adjusted to a cell concentration of about ¹⁰ 8 ~10 9 cell / ^ml in an appropriate amount of sterile water.
[0037]
2 mL of the compositions of Tables 1 and 2 that had been serially diluted twice with sterile water in advance were prepared in test tubes, 1 mL of the bacterial solution was poured, and the cells were contacted at 25 ° C. for 15 minutes. A contact solution of bacteria and the composition was immediately added to a 96-well micro Petri dish (Corning Coaster) in SCDLP medium (manufactured by Nippon Pharmaceutical Co., Ltd.) containing 0.2% dispensed 1.0% sodium thiosulfate. After culturing by inoculating 0.05 mL, the composition was inactivated and cultured at 35 ° C. for 24 hours. After cultivation, the highest dilution ratio at which no turbidity occurred in the culture solution (complete sterilization was possible) was expressed as a minimum dilution concentration as a numerical value of the dilution ratio.
[0038]
(3) Anti-whitening test (3-1) Test method 1
A SUS304 test piece (3 cm × 8 cm) is polished with # 240 sandpaper, washed and dried. The test piece was placed horizontally, and 1 mL of a 20-fold diluted (weight ratio) aqueous solution of the composition shown in Tables 1 and 2 was dropped uniformly, left at 25 ° C. for 2 hours, and washed with a water stream. After drying, the condition of the test piece surface was visually observed, and the anti-whitening property was evaluated according to the following criteria.
：: No change from before treatment (drip of aqueous solution).
Δ: Some white matter remains.
×: Clearly white matter remains and whitened.
[0039]
(3-2) Test method 2
A test piece pretreated in the same manner as in Test Method 1 is placed horizontally, and a 20-fold (weight ratio) aqueous solution of the composition shown in Tables 1 and 2 is uniformly sprayed using a trigger sprayer. The number of strokes was five. This trigger sprayer can spray about 1 mL of aqueous solution in one stroke, and the aqueous solution is sprayed as foam having a foaming ratio of 3 to 10 times. After being left at 25 ° C. for 2 hours, it was washed with water. After drying, the condition of the test piece surface was visually observed, and the whitening prevention was evaluated in the same manner as in Test Method 1 described above.
[0040]
[Table 1]

[0041]
[Table 2]

[0042]
(Note) In the table, POE is an abbreviation for polyoxyethylene, and the number in parentheses is the average number of moles of ethylene oxide added.

Claims

(A) one or more fungicides selected from quaternary ammonium salt fungicides, pyridinium salt fungicides, biguanide fungicides and amino acid fungicides, (B) alkali metal silicates, and (C) A germicidal detergent composition containing a polyoxyalkylene alkyl ether represented by the general formula (I).
R ¹ -O- (AO) _n -H (I)
[Wherein, R ¹ represents a linear or branched alkyl group or alkenyl group having 8 to 30 carbon atoms, AO represents an alkyleneoxy group having 2 to 4 carbon atoms, and n represents an average number of moles of alkylene oxide added. And a number of 16 to 600. ]

(A) is a quaternary ammonium salt fungicide and / or a pyridinium salt fungicide selected from a compound represented by the following general formula (A-1) and a compound represented by the following general formula (A-2). The germicidal detergent composition according to claim 1, which is an agent.

[In the formula, one or two of R ² , R ³ , R ⁴ , and R ⁵ may be a linear or branched alkyl or alkenyl group having 8 to 16 carbon atoms or a compound represented by the following formula:

And the rest may be the same or different, and each represents an alkyl group having 1 to 3 carbon atoms, a benzyl group, or the following formula-(CH ₂ CH ₂ O) _m -H (m is an ethylene oxide R ⁶ represents a linear or branched alkyl or alkenyl group having 12 to 18 carbon atoms, and X ⁻ represents a halogen. An ion or an organic anion. ]

3. The germicidal detergent composition according to claim 1, further comprising (D) an amphoteric surfactant.

The germicidal detergent composition according to any one of claims 1 to 3, further comprising (E) a metal chelating agent.

A cleaning method wherein the sterilized detergent composition according to any one of claims 1 to 4 is foamed with a water diluent diluted to a concentration of 10 to 1000 mL / 1 L of water to contact a cleaning target.